Yoke vise



y I c. E. WRIGHT 2,318,566

YOKE VISE Filed Oct. 13, 1941 .INVENTOR. 61 YD! E- W/P/GHT BY M-Patented May 4, 1943 NHTE israr s e- 2,318,566 YOKE visit Ciyde E. WrigRidge Tool Company, N

corporation of Ohio Appiieation @etober 13, 1941, Se'riai No; 114, 761

(oil s1 1-9-) Thisinvention relates broadly to vises'and morespecifically to improvements in jaw holders for yoke Vises.

Heretofore in the construction of yoke vises, such as are used forholding pipes, bars and other tubular objects, the adjustable'jaw hasusually been secured within the socket or housing member by a bolt orrivet extending through the jaw and socket member. Such an arrangementnot only increases the cost of manufacture of the vise, due toadditional machining operations, but also tends to weaken the jawmember, thus materially reducing its efiectiveness and efficiency.

One of the objects of the present invention resides in the provision ofa yoke vise having a slidable socket member of complementary sectionswhich are secured together for locking the jaw member therein.

Another object of the invention is to provide the socket member withinwardly extending projections for engaging and retaining the jaw membertherein.

Another object is to provide a jaw which is a solid member withoutopenings therethrough.

Another object of the invention is to provide a yoke vise which is ofsimple and rugged construction, economical of manufacture and reliableand efficient in operation.

Other objects and advantages more or less ancillary to the foregoing andthe manner in which all the various objects are realized will appear inthe following description, which considered in connection with theaccompanying drawing, sets forth the preferred embodiment of theinvention.

Referring to the drawing wherein the preferred embodiment of theinvention is illustrated Fig. 1 is a front elevational view of theimproved yoke vise;

Fig. 2 is a side elevational view of the yoke vise shown in Fig. 1;

Fig. 3 is a sectional view showing the socket or housing member with thejaw member disposed therein, the section being taken on a planeindicated by the line 33 of Fig. 1; and

Fig. 4 is a transverse sectional view of a fragmentary portion of thevise showing the jaw member secured within the socket, the view beingtaken on a plane indicated by line 4-4 of Fig. 1.

As shown in Fig. 1, the yoke vise comprises a base or stationary framemember H having an adjustable clamp means II for securing the vise to asuitable support l2. An upper yoke member I4 is provided with bifurcatedend portions and I B which engage a pair of diametrically disposed,upwardly extending" lugs I 1 and I8 formed on the'ba's e member H3. Theup er yoke member l4 ispivo'tally secured to the base member H! by abolt l9' extending through the bifurcated end portion l5 and the lug H.A' hook-2| pivotally mounted upon the upper yoke member l4, super'jacentthe bifurcated end portion 16 is adapted for quick detachable engagementwith the lug l8 on the base for securing the yoke member to the basemember Ill. The bifurcated end portion l6 may be secured to the lug I8by a pin, not shown, to facilitate the locking of the yoke upon the basemember.

A hardened pipe engaging jaw 22 is formed on the base member I0intermediate the lugs I! and I8 and provides a cradle for the receptionof a pipe 23. An upper jaw member 25 having recesses 26 in opposite'endsis mounted within a socket or housing member'formed of a pair ofcomplementary cup sections 2'! and 28. Inwardly extending abutments 29are formed in the sections 21 and 28 for engaging the recesses 26 to aidin the retention of the jaw member 25 within the socket. The section 21and 28 of the socket are provided with a pair of aligned laterallyextending arms 30 which terminate in angular lips 3| for slidablyengaging opposite ways 32 provided by the sides of the yoke member It.The jaw member 25 is securely locked within the cup sections 2'! and 28by bolts 33 extending through the arms 31! and having nuts threaded onthe free ends for drawing the cup sections together.

Formed on the top surface of the cup sections 21 and 28 there areupwardly extending semicylindrical portions 35 having an inwardlyprojecting flange 36 defining a chamber 31 superjacent the jaw member25. A screw threaded member 38 having an enlarged head 39 formed on oneend extends through the apex of the upper yoke I4 and the enlarged headis positioned within the chamber 31 for engaging the jaw member 25. Asuitable bar, not shown, is secured within the outer end of the member38 to facilitate the movement of the socket or housing within the dpperyoke l4. V

In the use of the improvedyoke vise the base member I0 is secured to asuitable support by the clamp l2 and the upper yoke member M ispivotally mounted upon the lug H. A pipe or other tubular object 23 isthen supported upon the jaw 22 subsequent to which the upper yoke I4 ispivoted about the lug I! until the hook 2| engages the lower portion ofthe lug l8. Upon the engagement of the hook 2| with the lug l8, thescrew threaded member 38 is rotated by the bar for moving the socketmember upon the ways 32 and the jaw 25 into engagement with the uppersurface of the pipe or tubular object to insure the retention of thepipe within the vise stand.

The enlarged head 39 formed on the screw threaded member 38 engages thejaw member 25 for retaining th pipe within the vise. The force orpressure developed by the screw threaded member 38 for securing the pipein the Vise is applied directly to the jaw member 25 so that the socketmember is practically devoid of any stress or strain and thus remainsfree to move on the ways 32. The only force or pressure that might beimparted to the socket member would be through the abutments 29 engagingthe recesses 26 of the jaw member 25.

Although the foregoing description is necessarily of a detailedcharacter, in order that the invention may be completely set forth, itis to be understood that the specific terminology is not intended to berestrictive or confining, and that various rearrangements of parts andmodifications of detail may be resorted to provided they come within thescope of the claim. 7

I claim: 7 v

A yoke vise comprising a base member and a pipe engaging jaw carriedthereon, an upper yoke portion removably mounted on said base and havingparallel guideways thereon, an upper jaw holding slide comprising a pairof complementary cup-shaped members each having pairs of laterallyextending arms terminating in angular lips for slidably engaging theguideways on said yoke, the upper portions of said members being formedto provide a recess, a screw threaded actuating member extending inthreaded engagement through said yoke and having an enlarged headconnected to said member by a reduced stem, said head extending intosaid recess with said head in said recess, said members being formedwith a pair of complementary portions to provide a rectangular socketextending transversely of said slide and having the ends provided withinwardly extending abutments, an upper jaw member carried in said socketand extending out of the socket toward said lower jaw and formed withrecesses adapted for engagement with said abutments, said head on saidstem arranged to engage the upper side of the jaw member in said socketand means extending through said slide members adjacent said socket forsecuring said members together and holding said jaw and head in saidsockets and said slide on said yoke.

CLYDE E. WRIGHT.

